Medical terminology for "stuck" facet joints?

[Jim M2]

For the first two years after ADR I was always complaining on other forums about popping of my lumbar. I would be miserable for days or weeks, then as a result of some motion I could detect a pop or feel something suddently move at the surgery level. Right away I could feel relief starting to come on, like a good painkiller kicking in. I never got painfree but the pain came down from the higher levels. Just the opposite could happen too. There could be a pop and I could suddenly feel pain start to grow. I wonder if stuck facets are the same or related phenomena?